# math

posted by .

the class is 50 students 30 like chocolate, 25 like vanilla, and 18 like both, which like neither.

• math -

If 18 like both, then (30-18) like just chocolate and (25-18) like vanilla.

50 - 18 - 12 - 7 = ?

• math -

18Ã·2=9
30-9=21
25-9=16
16+21=37
50-37=13

## Similar Questions

1. ### SETS AND COUNTING

In a survey of 289 college students, it is found that 65 like Brussels sprouts, 93 like broccoli, 55 like cauliflower, 28 like both Brussels sprouts and broccoli, 24 like both Brussels sprouts and cauliflower, 20 like both broccoli …
2. ### math

Class has 28 students. 23 like basketball. Also, 15 like baseball. 12 like both. How many students do not like either.
3. ### math

there are balls of colors red, blue and green. 65 students of a class like exactly one color, 10 students like no color, 40 students like exactly 2 colors and 15 students like all the 3 colors 1. how many students are there in the …
4. ### statistics

Table: Like Dogs Yes No Like cats Yes 194 21 No 110 10 For parts a-d give a fraction and % for answer. A.What % of all students like dogs?
5. ### Math

in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject of if 100 students …
6. ### Math

in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject if 100 students …
7. ### maths

In a group of 50students,35 students like only one subject out of english & science.The ratio of students who like both & who dont like both is 1:2.Find the number of students who like both the subject.
8. ### English

Dona is a female animal...... She doesn't like chocolate. ------------------------------ Does Dona like chocolate?
9. ### Math

in a group of people 60% like chocolate and 70% like strawberry then percantage of peole which like both strawberry and chocolate
10. ### Math

402 students were surveyed about their preferences of sports. 140 students like football, 144 students like baseball, and 42 students like both sports. How many students like exactly one of the two sports?

More Similar Questions